IEEE Transactions on Vehicular Technology

Items from 1 to 20 out of 56 results

article

On Sidelobe Suppression for Multicarrier-Based Transmission in Dynamic Spectrum Access Networks

Zhou Yuan, Alexander M Wyglinski

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1998 - 2006

In this paper, we investigate the net sidelobe power reduction of noncontiguous orthogonal frequency-division-multiplexing (NC-OFDM) signals using an approach combining cancellation carriers (CCs) and modulated filter banks (MFBs). NC-OFDM can enable high-speed dynamic spectrum access (DSA) networks via transmission over several disjoint separate frequency bands. However, OFDM generally produces a...

article

Resource Allocation for OFDMA-Based Cognitive Radio Multicast Networks With Primary User Activity Consideration

Duy T Ngo, Chintha Tellambura, Ha H Nguyen

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1668 - 1679

This paper considers the primary user activity or the subchannel availability in optimally distributing the available resources for an orthogonal frequency-division multiple-access (OFDMA) cognitive radio multicast network. For this purpose, a risk-return model is presented, and a general rate-loss function, which gives a reduction in the attainable throughput whenever primary users reoccupy the temporarily...

article

Affordable Cyclostationarity-Based Spectrum Sensing for Cognitive Radio With Smart Antennas

K.-L Du, Wai Ho Mow

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1877 - 1886

Cognitive radio (CR) technology is a promising way to improve the bandwidth efficiency of underutilized radio spectra. For practical CR systems with limited a priori knowledge of the primary users' signal characteristics, spectrum sensing is mainly based on energy detection and cyclostationary feature detection. Energy detection is simple and practical but becomes ineffective at a low signal-to-interference-and-noise...

article

IEEE Transactions on Vehicular Technology publication information

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > C2

article

Capacity Bounds for a Cognitive MIMO Gaussian Z-Interference Channel

Yong Peng, Dinesh Rajan

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1865 - 1876

In this paper, we compute an achievable rate of a multiple-input-multiple-output (MIMO) Gaussian Z-interference channel (ZIC), as shown in Fig. 1, when transmit node C has imperfect cognitive knowledge of the signal sent by transmit node A. First, we compute the capacity of this channel, assuming noncausal but noisy knowledge at node C of node A's signal. We then compute the achievable rate for a...

article

A Novel Sensing Coordination Framework for CR-VANETs

Xiao Yu Wang, Pin-Han Ho

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1936 - 1948

This paper introduces a novel framework of coordinated spectrum sensing in cognitive-radio-enhanced vehicular ad hoc networks (CR-VANETs). The proposed sensing coordination framework intends to initiate a graceful compromise between stand-alone and cooperative sensing by taking the best of the two while mitigating their respective disadvantages. With a sensing coordination node temporarily defined,...

article

A Novel Spectrum-Sensing Technique in Cognitive Radio Based on Stochastic Resonance

Di He, Yingpei Lin, Chen He, Lingge Jiang

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1680 - 1688

We propose a novel spectrum-sensing method for cognitive radio (CR) based on stochastic resonance (SR). The spectral power of primary users (PUs) can be amplified, and the signal-to-noise ratio (SNR) of a received signal can be increased using SR. This ensures that the detection probability of the proposed approach is higher than that of the traditional energy detector. The detection probability of...

article

Scaling Capacity by Two Channels in IEEE 802.11 Ad Hoc Networks With an SIR Comparison Algorithm

Ping Chung Ng, David J Edwards, Soung Chang Liew

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 2071 - 2079

When an IEEE 802.11 ad hoc network achieves a capacity C using a single channel, the targeted capacity using two channels should be 2 ??C. We believe that this should be used as the benchmark for capacity comparisons for multichannel schemes. However, most of the dual-channel 802.11 protocols proposed in the literature appear to achieve less than 60% of the 2 ??C targeted capacity. In previous work,...

article

Extended Active Interference Cancellation for Sidelobe Suppression in Cognitive Radio OFDM Systems With Cyclic Prefix

Daiming Qu, Zhiqiang Wang, Tao Jiang

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1689 - 1695

The sidelobe of noncontiguous orthogonal frequency-division multiplexing (OFDM) signals is required to be deeply suppressed in the licensed user's band in cognitive radio (CR) systems. To this end, we propose a novel method of adding extended active interference cancellation (EAIC) signals to suppress sidelobes and to shape the spectrum of the CR-OFDM signal with a cyclic prefix (CP). For simplicity,...

article

Distributed Q-Learning for Aggregated Interference Control in Cognitive Radio Networks

Ana Galindo-Serrano, Lorenza Giupponi

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1823 - 1834

This paper deals with the problem of aggregated interference generated by multiple cognitive radios (CRs) at the receivers of primary (licensed) users. In particular, we consider a secondary CR system based on the IEEE 802.22 standard for wireless regional area networks (WRANs), and we model it as a multiagent system where the multiple agents are the different secondary base stations in charge of...

article

Game Theoretical Resource Allocation for Inter-BS Coexistence in IEEE 802.22

Chun-Han Ko, Hung-Yu Wei

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1729 - 1744

IEEE 802.22 is the first cognitive-radio-based wireless communication standard. To manage resource sharing, IEEE 802.22 designs an interbase station (inter-BS) coexistence mechanism enabling distributed competing BSs to coexist effectively. In this IEEE 802.22 mechanism, BSs could be considered as players optimizing their own performance in a self-organizing way. Therefore, it is suitable to apply...

article

An Analysis of Frequency Rendezvous for Decentralized Dynamic Spectrum Access

Di Pu, Alexander M Wyglinski, Mike McLernon

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1652 - 1658

In this paper, we propose an analysis of frequency rendezvous techniques employing three different scanning rules by combining analytical results with computer simulations. Frequency rendezvous is a critical step in bootstrapping a wireless network that does not possess centralized control. Current techniques for enabling frequency rendezvous in decentralized dynamic spectrum access (DSA) networks...

article

Simple and Accurate Error Probability Evaluation of Multiple-Input–Multiple-Output Systems Using Optimum Linear Combining

Lie-Liang Yang, Wei Yang

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 2098 - 2103

This correspondence motivates simple and accurate evaluation of the error probability of multiantenna multiple-input-multiple-output (MIMO) systems using optimum linear combining (OLC). Using both the first- and second-order statistics of the eigenvalues involved, we propose an Order-2 approximation approach (i.e., Gamma-approximation), which approximates the related eigenvalues as independent gamma-distributed...

article

A Survey of Artificial Intelligence for Cognitive Radios

An He, Kyung Kyoon Bae, Timothy R Newman, Joseph Gaeddert, more

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1578 - 1592

Cognitive radio (CR) is an enabling technology for numerous new capabilities such as dynamic spectrum access, spectrum markets, and self-organizing networks. To realize this diverse set of applications, CR researchers leverage a variety of artificial intelligence (AI) techniques. To help researchers better understand the practical implications of AI to their CR designs, this paper reviews several...

article

Capacity Limits and Performance Analysis of Cognitive Radio With Imperfect Channel Knowledge

Himal A Suraweera, Peter J Smith, Mansoor Shafi

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1811 - 1822

Cognitive radio (CR) design aims to increase spectrum utilization by allowing the secondary users (SUs) to coexist with the primary users (PUs), as long as the interference caused by the SUs to each PU is properly regulated. At the SU, channel-state information (CSI) between its transmitter and the PU receiver is used to calculate the maximum allowable SU transmit power to limit the interference....

article

Auction-Based Spectrum Management of Cognitive Radio Networks

Hung-Bin Chang, Kwang-Cheng Chen

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1923 - 1935

Cognitive radio (CR) technology is considered to be an effective solution to enhance overall spectrum efficiency, whereas a primary radio network (PRN) typically does not fully utilize an available spectrum. However, to realize the CR concept, it is essential to provide enough incentives to PRNs and extra revenue to the service provider such that CR mobile stations (CR-MSs) may accordingly utilize...

article

Cooperative Sensing of Wideband Cognitive Radio: A Multiple-Hypothesis-Testing Approach

Sau-Hsuan Wu, Chao-Yuan Yang, D.-H Tina Huang

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1835 - 1846

A low-complexity decision fusion method is proposed for cooperative spectrum sensing (SS) of wideband cognitive radio (CR) using multiple-hypothesis testing. To maintain the quality of SS in multiple channels, performance indices of false-sensing rate and false-ignorance rate are defined for the Benjamini-Hochberg (BH) procedure to control the false-alarm ratio (FAR) and missing ratio (MR) of SS,...

article

Optimal Sensing Disruption for a Cognitive Radio Adversary

Qihang Peng, Pamela C Cosman, Laurence B Milstein

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1801 - 1810

Spectrum sensing vulnerabilities in cognitive radio (CR) networks are being actively investigated, where most research focuses on mechanisms that deal with possible attacks without examining optimal sensing disruption strategies. This paper addresses the optimal design and analysis of a power-limited intelligent adversary to a CR network. The adversary targets unused bands and puts energy into them...

article

Effective Adaptive Iteration Algorithm for Frequency Tracking and Channel Estimation in OFDM Systems

Hong-Yu Liu, Rainfield Y Yen

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 2093 - 2097

For joint maximum-likelihood (ML) frequency tracking and channel estimation using orthogonal frequency-division multiplexing (OFDM) training blocks in OFDM communications over mobile wireless channels, a major difficulty is the local extrema or multiple-solution complication arising from the multidimensional log-likelihood function. To overcome this, we first obtain crude ML frequency-offset estimators...

article

Cross-Layer Routing and Dynamic Spectrum Allocation in Cognitive Radio <emphasis emphasistype="italic">Ad Hoc </emphasis> Networks

Lei Ding, Tommaso Melodia, Stella N Batalama, John D Matyjas, more

IEEE Transactions on Vehicular Technology > 2010 > 59 > 4 > 1969 - 1979

Throughput maximization is one of the main challenges in cognitive radio ad hoc networks, where the availability of local spectrum resources may change from time to time and hop by hop. For this reason, a cross-layer opportunistic spectrum access and dynamic routing algorithm for cognitive radio networks is proposed, which is called the routing and dynamic spectrum-allocation (ROSA) algorithm. Through...

Number:
4
Volume:
59
Year:
2010

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Keywords

COGNITIVE RADIO (34)
CHROMIUM (20)
COGNITIVE RADIO (CR) (16)
WIRELESS COMMUNICATION (12)
INTERFERENCE (10)
SPECTRUM SENSING (10)
OFDM MODULATION (8)
THROUGHPUT (8)
ANALYTICAL MODELS (7)
COGNITIVE RADIO NETWORKS (7)
FREQUENCY DIVISION MULTIPLEXING (7)
OFDM (7)
ALGORITHM DESIGN AND ANALYSIS (6)
BANDWIDTH (6)
BASE STATIONS (6)
FREQUENCY (6)
MIMO (6)
QUALITY OF SERVICE (6)
RADIO SPECTRUM MANAGEMENT (6)
RADIO TRANSMITTERS (6)
RESOURCE MANAGEMENT (6)
ROBUSTNESS (6)
SIGNAL TO NOISE RATIO (6)
AD HOC NETWORKS (5)
DYNAMIC SPECTRUM ACCESS (5)
ERROR STATISTICS (5)
INTERFERENCE CONSTRAINTS (5)
MIMO COMMUNICATION (5)
MOBILE COMMUNICATION (5)
ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING (OFDM) (5)
PERFORMANCE ANALYSIS (5)
POWER CONTROL (5)
RADIOFREQUENCY INTERFERENCE (5)
TESTING (5)
WIRELESS CHANNELS (5)
WIRELESS SENSOR NETWORKS (5)
ACCESS PROTOCOLS (4)
BIT ERROR RATE (4)
DELAY (4)
FADING (4)
FADING CHANNELS (4)
GAME THEORY (4)
MOBILE RADIO (4)
POWER ALLOCATION (4)
RADIO NETWORKS (4)
RECEIVERS (4)
TRANSCEIVERS (4)
VEHICLE DYNAMICS (4)
ARRAY SIGNAL PROCESSING (3)
AVAILABILITY (3)
CHANNEL CAPACITY (3)
CHANNEL ESTIMATION (3)
CLOSED-FORM SOLUTION (3)
COMMUNICATION SYSTEM CONTROL (3)
DECODING (3)
DETECTORS (3)
DIVERSITY RECEPTION (3)
HELIUM (3)
IEEE STANDARDS (3)
INTERFERENCE (SIGNAL) (3)
INTERFERENCE CANCELLATION (3)
INTERFERENCE SUPPRESSION (3)
ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (3)
PROBABILITY (3)
PROTOCOLS (3)
RADIO CONTROL (3)
RADIO RECEIVERS (3)
SPECTRUM EFFICIENCY (3)
STATISTICAL ANALYSIS (3)
SYSTEM PERFORMANCE (3)
WIMAX (3)
WIRELESS NETWORKS (3)
ANTENNA ARRAYS (2)
BER (2)
CHANNEL ALLOCATION (2)
COGNITIVE RADIO NETWORKS (CRNS) (2)
COGNITIVE RADIO SYSTEM (2)
COGNITIVE RADIO SYSTEMS (2)
COMMUNICATION SYSTEM TRAFFIC CONTROL (2)
COMMUNICATIONS TECHNOLOGY (2)
COMPUTATIONAL COMPLEXITY (2)
COMPUTER VISION (2)
DATA COMMUNICATION (2)
DEMODULATION (2)
DETECTION PROBABILITY (2)
EDUCATIONAL TECHNOLOGY (2)
EIGENVALUES AND EIGENFUNCTIONS (2)
ENERGY DETECTION (2)
ENERGY EFFICIENCY (2)
ERROR CORRECTION (2)
ERROR PROBABILITY (2)
FAIRNESS (2)
FCC (2)
FREQUENCY ESTIMATION (2)
INTELLIGENT SENSORS (2)
INTERFERENCE CHANNELS (2)
ITERATIVE METHODS (2)
LEAST MEAN SQUARES METHODS (2)
MARKOV PROCESSES (2)
MAXIMUM LIKELIHOOD ESTIMATION (2)
more

INFONA - science communication portal

IEEE Transactions on Vehicular Technology

On Sidelobe Suppression for Multicarrier-Based Transmission in Dynamic Spectrum Access Networks

Resource Allocation for OFDMA-Based Cognitive Radio Multicast Networks With Primary User Activity Consideration

Affordable Cyclostationarity-Based Spectrum Sensing for Cognitive Radio With Smart Antennas

IEEE Transactions on Vehicular Technology publication information

Capacity Bounds for a Cognitive MIMO Gaussian Z-Interference Channel

A Novel Sensing Coordination Framework for CR-VANETs

A Novel Spectrum-Sensing Technique in Cognitive Radio Based on Stochastic Resonance

Scaling Capacity by Two Channels in IEEE 802.11 Ad Hoc Networks With an SIR Comparison Algorithm

Extended Active Interference Cancellation for Sidelobe Suppression in Cognitive Radio OFDM Systems With Cyclic Prefix

Distributed Q-Learning for Aggregated Interference Control in Cognitive Radio Networks

Game Theoretical Resource Allocation for Inter-BS Coexistence in IEEE 802.22

An Analysis of Frequency Rendezvous for Decentralized Dynamic Spectrum Access

Simple and Accurate Error Probability Evaluation of Multiple-Input–Multiple-Output Systems Using Optimum Linear Combining

A Survey of Artificial Intelligence for Cognitive Radios

Capacity Limits and Performance Analysis of Cognitive Radio With Imperfect Channel Knowledge

Auction-Based Spectrum Management of Cognitive Radio Networks

Cooperative Sensing of Wideband Cognitive Radio: A Multiple-Hypothesis-Testing Approach

Optimal Sensing Disruption for a Cognitive Radio Adversary

Effective Adaptive Iteration Algorithm for Frequency Tracking and Channel Estimation in OFDM Systems

Cross-Layer Routing and Dynamic Spectrum Allocation in Cognitive Radio <emphasis emphasistype="italic">Ad Hoc </emphasis> Networks

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